Patents by Inventor Patrick Demeyer

Patrick Demeyer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for preparing a flexible polyurethane foam
    Patent number: 4997858
    Abstract: A method for preparing a flexible polyurethane foam, wherein a polyether-polyol having an average molecular weight from 1000 to 8000 and an average functionality not larger than 4, is brought into reaction with an organic polyisocyanate in the presence of a foam stabilizer, a catalyst and blowing agent comprising methylformate, wherein a cross-linker/extender and/or amine catalyst with delayed action is added to said reaction mixture.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: March 5, 1991
    Assignee: Recticel
    Inventors: Lucien Jourquin, Eddie Du Prez, Patrick Demeyer, Rudi Mortelmans